From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f178.google.com (mail-wi0-f178.google.com [209.85.212.178]) by dpdk.org (Postfix) with ESMTP id 20A6F8D96 for ; Wed, 4 Nov 2015 17:09:39 +0100 (CET) Received: by wikq8 with SMTP id q8so95335021wik.1 for ; Wed, 04 Nov 2015 08:09:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=6wind_com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:organization:user-agent :in-reply-to:references:mime-version:content-transfer-encoding :content-type; bh=vn9Ht5C0HRo1vaAvopsfP6CxNtg/2ELzzYf0PWNu/eE=; b=zt8TNeKPww57vErkKY5UBJQexCzNdH2yQ9ZwFrVR1miFgweyQ0Y78oSso3itskqyGH 3mW0qAfHvE01vIoGKgwnZWeNiBJowF+NUQ6yDkschmcLsOeuTRtVijWXhOeWnCQMJzM0 u584FmNNdcDe+FiFR01D3kgh8LjpTxP/syQF/dynOKYDXcABizvnJeRYQ7MQlwDwaWDR CJgYyK98A+gEIt4fwcUAhAHpgT1/viCRYM7UzRaUZ+EqguyeKO5M6VXiWUNE8l481KkQ 19z/ZmThb6SBaG0ZZXyxAYtTZYoRx9YqqxJj6myMnZlwuC95tSq3E36Idj4T7Eg4XxMk kmWA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:organization :user-agent:in-reply-to:references:mime-version :content-transfer-encoding:content-type; bh=vn9Ht5C0HRo1vaAvopsfP6CxNtg/2ELzzYf0PWNu/eE=; b=JB5lvbWRH6zbh73tfFEIa0z2OM+5gs6ITpDrxgW8QZs9EUm0FtUw4OpJPOJXsTHlzf mpGFW8LUFEAPPsKY+hKxAtbHhEM/2Do/j0gE+vrUxrqITGGweSgWh5pl/ZHOQ3IwGMyn 8AZMAkCQWqkqZIKIrX+DP/i7j3gSBJ+eQN6maPL6PLrsrT6jfaNHAz0ipY8EUeW8EVeS VkBbSVaiUQLo+LwGL8AG9YA/g+IOtf81YkZ/3G35H8SpcC3YgZ7Nb5w0DHpuILU6gtxo cgvyxXlojYNDjON0EKneXkc18kXjuEK51UWxKpSJvhfeWkAYs/X1Jw7uobcYRTW1pQAy c1UQ== X-Gm-Message-State: ALoCoQm4+THhh6qU4fvBSav7/ItZpDVVtrLAIWZCV1ae4HqSD57sai4zALgrc/rtP5QqAyLKjz4D X-Received: by 10.194.76.9 with SMTP id g9mr2798323wjw.47.1446653378797; Wed, 04 Nov 2015 08:09:38 -0800 (PST) Received: from xps13.localnet (guy78-3-82-239-227-177.fbx.proxad.net. [82.239.227.177]) by smtp.gmail.com with ESMTPSA id vr10sm2264920wjc.38.2015.11.04.08.09.37 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 04 Nov 2015 08:09:38 -0800 (PST) From: Thomas Monjalon To: Harry van Haaren Date: Wed, 04 Nov 2015 17:08:26 +0100 Message-ID: <3719124.DH6p50L0ak@xps13> Organization: 6WIND User-Agent: KMail/4.14.10 (Linux/4.1.6-1-ARCH; KDE/4.14.11; x86_64; ; ) In-Reply-To: <1446652230-10009-1-git-send-email-harry.van.haaren@intel.com> References: <5639CB88.7040108@allegro-packets.com> <1446652230-10009-1-git-send-email-harry.van.haaren@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Cc: dev@dpdk.org Subject: Re: [dpdk-dev] [PATCH] ixgbe: remove l3_l4_xsum_errors from rx errors X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 04 Nov 2015 16:09:39 -0000 2015-11-04 15:50, Harry van Haaren: > This patch removes l3_l4_xsum_errors from rx errors. > > The reason to remove it is that UDP packets have an optional checksum, and > when not calculated the checksum field should be set to zero. When the > checksum is not calculated (zero-ed out), the hardware still counts a valid > UDP packet as an l3_l4_xsum_error. > > This hardware issue is documented in 82599 errata, titled: > "Integrity Error Reported for IPv4/UDP Packets with Zero Checksum" Please Harry, could you add a Fixes tag to track the origin of the bug?